Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mainstay Clinics Inc

Organization Nurse Practitioner · NPI 1134622053

Mainstay Clinics Inc is a Nurse Practitioner in Libertyville, Illinois. Licensed in Illinois. Registered with an NPI since 2018.

Licensed in
IL
In the registry since
2018
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

333 Peterson Rd Ste 240
Libertyville, IL 60048-1085
Phone: (224) 864-2124
Fax: (224) 864-2178
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 209009332 (IL)

Record details

NPI number1134622053
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Alexander Jarosz — Officer · (224) 717-0447
NPI enumeratedMarch 16, 2018
Last updated in NPPESAugust 29, 2025
Certification dateAugust 29, 2025
Mailing address17942 W Pond Ridge Cir, Gurnee, IL 60031-4534

Other providers in Libertyville